MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
The M56782FP is a semiconductor integrated circuit in order to
drive 4ch actuator.
FEATURES
1
42
OUT3
VBS1
2
41
IN3-
Vm1
3
40
VBS2
IN1-
4
39
Vm2
OUT1
5
38
IN3+
VM1-
6
37
VM3-
VM1+
7
36
VM3+
8
35
9
34
M56782FP
● Large power dissipation
● 3.3V DSP available.
● Low saturation voltage.
(Typical 1.35V at load current 0.5A and no bootstrap condition.)
● There are two motor power supplies.
Vm1 CH1, 2 motor power supply-1
Vm2 CH3, 4 motor power supply-2
● Flexible Input amp. setting. (It enables PWM control.)
● Low cross-over distortion.
● Wide supply voltage range. (4.5V – 13.2V)
● Built-in Thermal Shut Down circuit.
● Built-in Mute circuit.
IN1+
10
11
GND
APPLICATION
12
MD, CD-audio, CD-ROM, VCD, DVD etc.
33
32
GND
31
13
30
14
29
VM2+
15
28
VM4+
VM2-
16
27
VM4-
OUT2
17
26
IN4+
IN2-
18
25
IN4-
IN2+
19
24
OUT4
MUTE
20
23
VREFO
SS.GND
21
22
VREF
Outline 42P9R-A
BLOCK DIAGRAM
Vm1
VBS2
40
VBS1
2
3
VBS1
E1
R
VBS2
R
R
-
Vm2
Vm1
-
+
+
-
+
IN1+ 1
IN1- 4
OUT1 5
Vm2
39
E3
R
VBS2
VBS1
VM1(+) 7
+
-
VM1(-) 6
+
VM2(+) 15
+
-
CH1
×5
Vrefm2
Vrefm1
CH3
×8
VBS1
VM2(-) 16
CH4
×8
VREFO
OUT2 17
BIAS
+
IN2- 18
IN2+ 19
VBS2
VBS1
Low,Open
MUTE ON
VBS1
VBS1
BIAS
E2
E4
+
VREF 22
36 VM3(+)
+
37 VM3(-)
+
-
28 VM4(+)
+
27 VM4(-)
25 IN426 IN4+
+
24 OUT4
TSD
VREFO 23
-
+
-
VBS2
CH2
×5
+
41 IN338 IN3+
42 OUT3
+
VBS1
VREF
20
MUTE
21
SS.GND
8 to 14
29 to 35
GND (14PINS)
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
PIN FUNCTION
Terminal
1
2
3
4
5
6
7
8
–
14
15
16
17
18
19
20
21
Symbol
IN1+
VBS1
Vm1
IN1OUT1
VM1(-)
VM1(+)
GND
VM2(+)
VM2(-)
OUT2
IN2IN2+
MUTE
SS.GND
Terminal function
Terminal
E1 amplifier non-inverted input
Bootstrap power supply
Motor power supply
E1 amplifier inverted input
E1 amplifier output
CH1 inverted output
CH1 non-inverted output
Motor GND
CH2 non-inverted output
CH2 inverted output
E2 amplifier output
E2 amplifier inverted input
E2 amplifier non-inverted input
mute
Small signal GND
42
41
40
39
38
37
36
29
–
35
28
27
26
25
24
23
22
Symbol
OUT3
IN3VBS2
Vm2
IN3+
VM3(-)
VM3(+)
GND
VM4(+)
VM4(-)
IN4+
IN4OUT4
VREFO
VREF
Terminal function
E3 amplifier output
E3 amplifier inverted input
Bootstrap power supply
Motor power supply
E3 amplifier non-inverted input
CH3 inverted output
CH3 non-inverted output
Motor GND
CH4 non-inverted output
CH4 inverted output
E4 amplifier non-inverted input
E4 amplifier inverted input
E4 amplifier output
Reference voltage output
Reference voltage input
ABSOLUTE MAXIMUM RATING (Ta = 25°C)
Symbol
Parameter
VBS
Vm
Io
Bootstrap power supply
Motor power supply
Output Current
Vin
Maximum input voltage of terminals
Pt
Kθ
Tj
Topr
Tstg
Power dissipation
Thermal derating
Junction temperature
Operating temperature
Storage temperature
Conditions
VBS power supply
Vm power supply
, 4 , 18 ,
, 26 , 38 ,
Free Air
Free Air
1
19
25
41
, 20 , 22 PIN
PIN
Rating
Units
15
15
500
0 – VBS1
0 – VBS2
1.2
9.6
150
-20 – +75
-40 – +150
V
V
mA
V
V
W
mW/°C
°C
°C
°C
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
RECOMMENDED OPERATING CONDITIONS
Symbol
Vm1, Vm2
VBS1,VBS2
Parameter
Limits
Typ.
5.0
Vm + 1.0
Min.
Motor power supply
Bootstrap power supply
Max.
Units
V
V
ELECTRICAL CHARACTERISTICS (Ta = 25°C, VBS = Vm = 5V unless otherwise noted)
Symbol
ICC1
Parameter
Conditions
Min.
—
Limits
Typ.
35
Max.
50
Units
Supply current - 1
VBS1, VBS2, Vm1, Vm2 current
ICC2
Supply current - 2
VBS1, VBS2, Vm1, Vm2 current at Sleep Mode
(MUTE1 = MUTE2 = 0V).
—
1.3
2.2
mA
Vsat1
CH1 – 4 Saturation voltage
Top and Bottom saturation voltage.
Load current 0.5A and no bootstrap.
—
1.35
1.9
V
Voff1
Voff2
Voff3
Voff4
CH1 output offset voltage
CH2 output offset voltage
CH3 output offset voltage
CH4 output offset voltage
CH1 Voltage Gain between
input and output
VREFO = OUT1 = 1.5V
VREFO = OUT2 = 1.5V
VREFO = OUT3 = 1.5V
VREFO = OUT4 = 1.5V
{VM1(+) – VM1(-)}
(OUT1 – VREFO)
-41
-41
-47
-47
—
—
—
—
41
41
47
47
mV
mV
mV
mV
4.5
5
5.5
V/V
Gain2
CH2 Voltage Gain between
input and output
{VM2(+) – VM2(-)}
(OUT2 – VREFO)
4.5
5
5.5
V/V
Gain3
CH3 Voltage Gain between
input and output
{VM3(+) – VM3(-)}
(OUT3 – VREFO)
7.2
8
8.8
V/V
Gain4
CH4 Voltage Gain between
input and output
{VM4(+) – VM4(-)}
(OUT4 – VREFO)
7.2
8
8.8
V/V
Gain1
mA
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
ELECTRICAL CHARACTERISTICS (Ta = 25°C, VBS = Vm = 5V unless otherwise noted)
Symbol
E1, E2 amp
E3, E4 amp
E1, E2 amp (no load)
E3, E4 amp (no load)
Min.
0.5
0.5
0.5
0.5
Limits
Typ.
—
—
—
—
Max.
VBS1-2.0
VBS2-2.0
VBS1-0.5
VBS2-0.5
Parameter
Conditions
Units
V
V
V
V
VinE
E1, 2, 3, 4, amplifier
input voltage range
VoutE
E1, 2, 3, 4, amplifier
output voltage range
VofE
E1, 2, 3, 4, amplifier offset
voltage
Vin = 1.5V (at buffer)
-10
—
+10
mV
IinE
E1, 2, 3, 4, amplifier input
current
IN+ = IN- = 1.5V
-1.0
-0.05
0
µA
1.0
—
VBS1-2.0
V
-10
-1.0
—
2.0
—
-0.05
—
—
+10
0
0.8
—
mV
µA
V
V
—
170
250
µA
VofVREF
IinVREF
Vmute-on
Vmute-off
VREF amplifier input voltage
range
VREF amplifier offset voltage
VREF amplifier input current
Mute-on voltage
Mute-off voltage
Imute
Mute terminal input current
VinVREF
Vin = 1.5V and ±2mA load
VREF = 1.5V
Mute-on
Mute-off
Mute terminal input current
(at 5V input voltage)
THERMAL DERATING
6.0
(W)
4.0W using H-type board
5.0
This IC’s package is POWER-SSOP, so
improving the board on which the IC is
mounted enables a large power dissipation
without a heat sink.
For example, using an 1 layer glass epoxy
resin board, the IC’s power dissipation is 2.7W
at least. And it comes to 4.0W by using an
improved 2 layer board.
The information of the H, I, J type board is
shown in the board information.
Power Dissipation (Pdp)
3.0W using I-type board
4.0
2.7W using J-type board
3.0
2.0
1.0
0
25
50
75
100
Ambient Temperature Ta (°C)
125
150
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
INPUT AND OUTPUT CHARACTERISTICS OF EACH CHANNELS
<INPUT>
CH1, 2
OUT
Vm1
+
r
r
1.5V
Vrefm1
0.2V
Vrefm1 Amp.
R
2.5R
VREFO
VREF
1.5V
2.5R
Vrefm1
(Vm/2)
Vref Amp.
OUT
R
+
IN-
+
-
VM-
VM+
R
VM+
<OUTPUT>
+
+
2.5R
0.5V
0.5V
VM-
IN+
Input Amp.
R
Gain = ×5
2.5R
Reference 1.5V
<INPUT>
CH3, 4
OUT
Vm2
1.5V
r
Vrefm2 Amp.
R
4R
<OUTPUT>
VREFO
VREF
1.5V
+
Reference 1.5V
VM+
R
4R
0.8V
Vrefm2
(Vm/2)
0.8V
OUT
IN+
VM+
+
Vref Amp.
IN-
0.2V
Vrefm2
+
r
R
+
Input Amp.
R
+
4R
4R
VM-
Gain = ×8
VM-
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
I/O TERMINAL EQUIVALENT CIRCUIT
(1) E1, E2 input amplifier I/O terminal equivalent circuit
(2) E3, E4 input amplifier I/O terminal equivalent circuit
(IN1+, IN1-, OUT1, IN2+, IN2-, OUT2)
(IN3+, IN3-, OUT3, IN4+, IN4-, OUT4)
VBS1
VBS1
GND
IN*-
VBS1
GND
GND
IN*+
VBS1
VBS2
VBS2
GND
IN*-
OUT*
(3) VREF amplifier I/O terminal equivalent circuit
VBS2
GND
IN*+
(4) MUTE equivalent circuit
(VREF, VREFO)
(MUTE)
VBS1
MUTE
.
VBS1
GND
2K
23K
23K
GND
VBS1
VREF
GND
VBS1
VREFO
GND
GND
VBS2
OUT*
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
I/O TERMINAL EQUIVALENT CIRCUIT
(5) CH1,CH2 power amplifier output terminal
equivalent circuit
(VM1(+), VM1(-), VM2(+), VM2(-))
VBS1
Vm1
VM
The equivalent circuits of an output stage of the power amplifiers
are shown in (5) and (6).
The power supplies of CH1, CH2 are Vm1.
And the power supplies of CH3, CH4 are Vm2.
The source side of the power amplifier output stage consists of a
PNP and a NPN.
In the case of the CH1 and CH2, the emitta of the PNP is
connected to VBS1, and in the case of the CH3 and CH4, it is
connected to VBS2. So the power of the PNP supplies can be
adjusted externally.
GND
(6) CH3, CH4 power amplifier output terminal
equivalent circuit
(VM3(+), VM3(-), VM4(+), VM4(-))
VBS2
Vm2
VM
GND
About bootstrap advantage
The output stage of the power amplifiers consists of the preceding
components. If VBS* is provided with higher voltage input than Vm*
(The recommendation voltage is Vm*+1V) externally, the output
range can be wider than that of VBS* = Vm*.
Please take advantage of this bootstrap function for the system
which has many power supplies. And it is the same with the
external bootstrap circuit which provides VBS* with higher voltage
inputs than Vm*.
Also the bootstrap can decrease the saturation voltage at the
source side of the power amplifier output stage. Therefore, when
the outputs of the power amplifiers which drive motors and
actuators are fully swung, the power dissipation of the IC will be
decreased.
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 1 single input (linear signal) · Direct voltage control
5V
VREFO
VBS1
VBS2
R
Vref
Vm2
Vrefm2
- +
5V
R
VREFO
- +
R
5V
1.5V
VREF
R
Vm1
- +
Vrefm1
IN3+
+ -
VREFO
IN1OUT1
VCTL1
E3
VREFO
- +
IN1+
IN3 -
E1
OUT3
R6
R5
VCTL3
R2
+
VM3+
-
×4
×2.5
M
Ra
FOCUS
×8
×5
×4
+ -
VM1-
×2.5
SLED
+ -
VM1+
VM3-
- +
R1
IN2+
IN2OUT2
VCTL2
E4
IN4+
R4
OUT4
×8
+ -
× 2.5
×4
BIAS
MUTE
Low, OPEN
MUTE ON
BIAS
TSD
SS.GND
GND
(14PINS)
VM4-
TRAY
×5
VM2-
R7
VM4+
M
TRACKING
×4
+
×2.5
VCTL4
R8
-
+ -
VM2+
VREFO
IN4-
- +
R3
E2
- +
+ -
VREFO
MITSUBISHI <CONTROL / DRIVER IC>
M56782FP
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 2
Differential PWM input · Direct voltage control (FOCUS, TRACKING, SPINDLE, SLED or LOADING)
5V
VREFO
VBS1
VBS2
Vref
Vrefm2
R
Vrefm1
R5
IN1+
R2
IN3+
E1
E3
- +
+ -
R2
C1
IN1OUT1
IN3 R6
C3
- +
R1
R1
Vm1
R5
R
VREF
R6
5V
1.5V
PWM1
- +
PWM1
PWM2
Vm2
VREFO
PWM2
R
- +
R
5V
OUT3
C1
C3
+ -
×2.5
-
×8
×2.5
R4
×4
+ -
IN2+
IN2OUT2
R3
R4
E2
E4
IN4+
- +
C2
VM3-
- +
+ -
VM1-
M
×5
VREFO
SLED
Ra
FOCUS
×4
VREFO
VM3+
+
VM1+
VREFO
VREFO
IN4VCTL4
OUT4
C2
×4
+ -
×4
- +
×8
×2.5
BIAS
MUTE
Low, OPEN
MUTE ON
BIAS
TSD
SS.GND
GND
(14PINS)
VM4-
TRAY
M
×5
VM2-
VM4+
+
×2.5
R7
-
+ -
PWM1
TRACKING
PWM2
R3
VM2+
R8